Recombination processes in CdTe quantum-dot-doped glasses
L A Padilha, A A R Neves, C L Cesar, L C Barbosa, C H B Cruz
Electron-hole recombination in CdTe quantum dots was studied by photoluminescence and resonant femtosecond pump-probe measurements. A dependence of recombination times with pump pulse intensity was observed and we attribute this to the Auger recombination process. The overall kinetic processes that we observed are a fast decay from the initial excited state to surface trap states, the Auger recombination, the recombination of electrons from the surface states, and a longer time recombination which we attribute to electrons in the deep traps states. (C) 2004 American Institute Of Physics.